﻿//取得中国所有的城市 
function getCity() {
    alert("aaa");
    var url = 'http://www.google.com/ig/countries';

    var cityRequest = new Ajax.Request(url, { method: 'get',
        parameters: 'output=xml&hl=zh-cn&country=cn',
        onComplete: showCityRespose
    });
    alert("bb");
}

function showCityRespose(originalRequest) {
    alert("cc");
    cityInfo = originalRequest.responseXML;
    cityNodes = cityInfo.getElementsByTagName("city");
    alert("dd" + cityNodes.length);
    for (var i = 0; i < cityNodes.length; i++) {
        var city = cityNodes;
        var cityName = getData(city, "name");
        var latitude = getData(city, "latitude_e6");
        var longitude = getData(city, "longitude_e6");
        var ption = document.createElement("option");
        $("city".options.add(option));
        option.innerText = cityName;
        option.value = ",,," + latitude + "," + longitude;
    }
}
function forecast(city) {
    alert("ff");
    $("result".innerHTML = "请稍等");
    var url = 'http://www.google.com/ig/countries';
    var param = 'hl=zh-cn&weather=' + city;
    var forecastRequest = new Ajax.Request(url, { method: 'get',
        parameters: param,
        onComplete: showResult
    });
}
//显示预报结果 
function showResult(originalRequest) {
    alert("ee");
    $("result".innerHTML = "");
    resultXML = originalRequest.responseXML;
    forecastNodes = resultXML.getElementsByTagName("forecast_conditions");
    for (i = 0; i < forecastNodes.length; i++) {
        var neNode = forecastNodes;
        var weekday = getData(oneNode, "day_of_week");
        var low = getData(oneNode, "low");
        var high = getData(oneNode, "high");
        var icon = getData(oneNode, "icon");
        var result = document.createElement("div");
        result.appendChild(document.createTextNode(weekday));
        result.appendChild(document.createElement("br"));
        result.appendChild(document.createTextNode("最低温度" + low));
        result.appendChild(document.createElement("br"));
        result.appendChild(document.createTextNode("最高温度" + high));
        result.appendChild(document.createElement("br"));
        var image = document.createElement("img");
        image.setAttribute("src", result.appendChild(image));
        $("result").appendChild(result);
    }
}

//取得数据值 
function getData(parentNode, nodeName) {
    return parentNode.getElementsByTagName(nodeName)[0].getAttribute("data");
}
function MM_swapImgRestore() { //v3.0
    var i, x, a = document.MM_sr; for (i = 0; a && i < a.length && (x = a[i]) && x.oSrc; i++) x.src = x.oSrc;
}

function MM_preloadImages() { //v3.0
    var d = document; if (d.images) {
        if (!d.MM_p) d.MM_p = new Array();
        var i, j = d.MM_p.length, a = MM_preloadImages.arguments; for (i = 0; i < a.length; i++)
            if (a[i].indexOf("#") != 0) { d.MM_p[j] = new Image; d.MM_p[j++].src = a[i]; } 
    }
}

function MM_findObj(n, d) { //v4.01
    var p, i, x; if (!d) d = document; if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
        d = parent.frames[n.substring(p + 1)].document; n = n.substring(0, p);
    }
    if (!(x = d[n]) && d.all) x = d.all[n]; for (i = 0; !x && i < d.forms.length; i++) x = d.forms[i][n];
    for (i = 0; !x && d.layers && i < d.layers.length; i++) x = MM_findObj(n, d.layers[i].document);
    if (!x && d.getElementById) x = d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
    var i, j = 0, x, a = MM_swapImage.arguments; document.MM_sr = new Array; for (i = 0; i < (a.length - 2); i += 3)
        if ((x = MM_findObj(a[i])) != null) { document.MM_sr[j++] = x; if (!x.oSrc) x.oSrc = x.src; x.src = a[i + 2]; }
}